Component Locations RENR8679-03

Description
Part Machine Schematic JANUARY 2013
Number Location Location
G5
G4
63 66 64 67 Accumulator GP - Brake 111-9040 1 I-7
Accumulator GP - Ride Control 325-7154 2 G-1

19 Actuator AS - Brake
Connector
135-5148
8C-0564
3
4
I-6
D-4

45 Connector - Orifice 1
Connector - Orifice 2
128-7063
128-7063
5
6
E-4
E-4

23 Control GP - Foot Brake

Cooler AS - Axle Oil
193-1448
200-4169
7
8
I-8
F-12

47 Core AS - Hydraulic Oil Cooler

Cylinder GP - Lift
240-7313
111-8181
9
10
D-14
F-3
Cylinder GP - Steering 261-4949 11 D-8

(Dimensions: 48 inches x 35 inches)

Cylinder GP - Tilt (High-Lift) (Left) 124-6227 12 G-4
Cylinder GP - Tilt (High-Lift) (Right) 124-6228 13 G-4
61 Cylinder GP - Tilt (Logger) (Left)
Cylinder GP - Tilt (Logger) (Right)
125-0617
124-0616
14
15
G-4
G-4
Cylinder GP - Tilt (Standard) (Left) 112-5004 16 G-4

RENR8679-03
Cylinder GP - Tilt (Standard) (Right) 112-5003 17 G-4
Filter - Magnetic (Axle Oil Cooler) (Front Axle) 251-6351 18 F-6
Filter - Magnetic (Axle Oil Cooler) (Rear Axle) 251-6351 19 F-12

58 59 Filter GP - Oil (Hydraulic)

Motor GP - Auto-Reversing Fan
330-6570
240-7732
20
21
C-14
D-13
Motor GP - Reversing Fan 255-6805 22 D-13
Pump GP - Axle Oil Cooler 215-3013 23 F-13
Pump GP - Hydraulic Fan 235-2716 24 C-13
Pump GP - Implement 292-9964 25 C-12
Pump GP - Pilot (Brake)
Pump GP - Secondary Steering
235-6501
150-7585
26
27
C-11
B-11
980H Wheel Loader
Pump GP - Steering
Screen AS - Hydraulic Tank 1
105-3635
9T-9227
28
29
C-12
B-12 Hydraulic System
18 Screen AS - Hydraulic Tank 2
Screen GP - Case Drain (Steering Pilot)
9T-9227
154-2883
30
31
B-12
D-8
4 Sensor GP - Position 214-4863 32 I-8
MHG1-UP
A8J1-UP
56 57 Strainer 1
Strainer 2
200-5978
200-5978
33
34
D-5
D-5
46 Switch AS - Limit (Stop Light) 3E-5520 35 I-8
KZL1-UP
65 62 Switch AS - Pressure (Brake)
Switch AS - Pressure (Parking Brake Oil)
3E-7693
3E-6452
36
37
H-8
H-6
JMS1-UP
8 Tank GP - Hydraulic
Valve AS - Fluid Sampling
234-8928
164-5590
38
39
B-12
B-12
Valve GP - Accumulator Charging (Brake) 172-6144 40 H-8

AXLE COOLING MAIN CONTROL VALVE

36 Page,
Valve GP - Auto-Reversing Fan 213-1040 41 D-11
Valve GP - Brake Control (Service) 201-3200 42 I-8
Valve GP - Breaker Relief (Hydraulic Tank) 220-0814 43 B-12
Valve GP - Check 9T-3096 44 F-2
5 NOT SHOWN
Tap Locations
Valve GP - Check (Axle Oil Cooler Bypass) 1
Valve GP - Check (Axle Oil Cooler Bypass) 2
130-5202 45 F-12
130-5202 46 F-12

LOCATED INSIDE 27 54 25 Tap

Pressure and Sampling
Schematic
Valve GP - Check (Dead Engine, Lift Arm Lower)
Valve GP - Check (Hydraulic Oil Cooler Bypass)
164-7474
240-0355
47
48
F-3
D-14
Description
HYDRAULIC TANK Number Location Valve GP - Check (Ride Control) 207-1810 49 F-2
A Brake Accumulator Pressure H-8 Valve GP - Check (Steering Quad) 111-7775 50 D-9

51 29 30 38 40 A SOS 26 G8 B
C
Front Brake Pressure
Rear Brake Pressure
I-9
I-9
Valve GP - Control (Parking Brake)
Valve GP - Demand Fan
106-1774
191-8735
51
52
H-6
C-13
6 G1
G2
Implement Pump Discharge Pressure
Tilt Rod End Cylinder Pressure
E-5
G-4
Valve GP - Diverter (Ride Control)
Valve GP - Diverter (Secondary Steering)
115-9328
144-5330
53
54
F-1
B-11

43 G3
G4
Tilt Head End Cylinder Pressure
Lift Rod End Cylinder Pressure
G-4
F-3
Valve GP - Lowering Control
Valve GP - Main Control (2-Function)
112-1817
290-6005
55
56
D-6
F-4
G5 Lift Head End Cylinder Pressure F-3 Valve GP - Main Control (3-Function) 290-6007 57 F-4
G7 Implement Pilot Pressure D-4 Valve GP - Pilot (2-Function) 290-8980 58 D-3

1 G8 Steering Pump Discharge Pressure C-12 Valve GP - Pilot (3-Function) 290-8981 59 D-3

33 34 G7
G9
G10
Steering Pump Load Sense Pressure
Steering Pilot Supply Pressure
B-12
C-10
Valve GP - Pilot (Steering)
Valve GP - Relief (High-Lift Tilt Cylinder) (Head)
173-0439
4T-4934
60
61
C-10
E-4
G11 Fan Pump Discharge Pressure C-13 Valve GP - Relief (High-Lift Tilt Cylinder) (Rod) 4T-4162 62 F-4

B 42 20 SOS Fluid Sampling Port B-12 Valve GP - Relief (Logger Tilt Cylinder) (Head) 4T-4935 63 E-4 © 2013 Caterpillar, All Rights Reserved Printed in U.S.A.

PILOT VALVE Valve GP - Relief (Logger Tilt Cylinder) (Rod)

Valve GP - Relief (Main)
Valve GP - Relief (Standard Tilt Cylinder) (Head)
4T-6103
114-2789
4T-4932
64
65
66
F-4
E-5
E-4

C Valve GP - Relief (Standard Tilt Cylinder) (Rod)

Valve GP - Relief (Steering Cylinder Crossover)
4T-4933
9T-7419
67
68
F-4
D-8
G3 Valve GP - Relief (Steering Pump Backup) 9T-7418 69 C-7

21 22 Valve GP - Reversing Fan

Valve GP - Shuttle 1
191-8735
8J-6875
70
71
E-13
C-10
Valve GP - Shuttle 2 141-1481 72 F-2
G2 Valve GP - Solenoid (Ride Control) 152-8340 73 F-2 FLUID POWER SYMBOLS
Valve GP - Steering 166-8495 74 D-7
Valve GP - Steering Neutralizer 1 321-5283 75 D-9 BASIC COMPONENT SYMBOLS
Valve GP - Steering Neutralizer 2 321-5283 76 C-9
17 PUMP OR MOTOR FLUID CONDITIONER SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION
MAIN

PUMP
AUX

PUMP
(FIXED) (2 - SECTION) (VARIABLE & PRESSURE

24 COMPENSATED)

13
VARIABILITY SPRING LINE RESTRICTION PRESSURE HYDRAULIC PNEUMATIC LINE RESTRICTION ATTACHMENT
(ADJUSTABLE) (VARIABLE) COMPENSATION ENERGY TRIANGLES (VARIABLE & PRESSURE

15 VALVE ENVELOPES VALVES

COMPENSATED)

VALVE PORTS

ONE POSITION TWO POSITION THREE POSITION TWO - WAY THREE - WAY FOUR - WAY

CONTROL VALVES CHECK VALVES

48 AB A B

P T P T
BASIC SPRING SHUTTLE PILOT
NORMAL POSITION SHIFTED POSITION INFINITE POSITION
SYMBOL LOADED CONTROLLED

9 FLUID STORAGE RESERVOIRS

12 14 16 39 31 G9
VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL

MEASUREMENT ROTATING SHAFTS

HYDRAULIC AND BRAKE CONTROL SYSTEM PRESSURE TEMPERATURE FLOW UNIDIRECTIONAL BIDIRECTIONAL

COMBINATION CONTROLS

41 70
NOT SHOWN
G11 52 SOLENOID SOLENOID SOLENOID SOLENOID & SERVO THERMAL DETENT

3 51 7 35 32 OR MANUAL & PILOT PILOT OR MANUAL

MANUAL CONTROL SYMBOLS

HYDRAULIC FAN
PUSH - PULL LEVER MANUAL SHUTOFF GENERAL MANUAL PUSH BUTTON PEDAL SPRING

RELEASED PRESSURE PILOT CONTROL SYMBOLS REMOTE SUPPLY PRESSURE

EXTERNAL RETURN INTERNAL RETURN SIMPLIFIED COMPLETE INTERNAL

SUPPLY PRESSURE

A IMPLEMENT ACCUMULATORS CROSSING & JOINING LINES HYDRAULIC & PNEUMATIC CYLINDERS

VALVE
SPRING LOADED GAS CHARGED LINES CROSSING LINES JOINING SINGLE ACTING DOUBLE ACTING

HYDRAULIC PUMPS HYDRAULIC MOTORS INTERNAL PASSAGEWAYS

LOADER
FRAME FIXED VARIABLE DISPLACEMENT FIXED VARIABLE DISPLACEMENT INFINITE
DISPLACEMENT NON-COMPENSATED DISPLACEMENT NON-COMPENSATED POSITIONING 3 POSITION 2 POSITION

B
2 9 UNIDIRECTIONAL UNIDIRECTIONAL

FLOW IN ONE PARALLEL CROSS FLOW IN

BIDIRECTIONAL BIDIRECTIONAL DIRECTION FLOW FLOW EITHER
DIRECTION

48
B A

RIGHT SIDE VIEW

ELECTRICAL SYMBOLS TABLE

MACHINE COMPONENT LOCATION HYDRAULIC SYMBOLS (ELECTRICAL)

D 74 G
10 M
TRANSDUCER TRANSDUCER GENERATOR ELECTRIC MOTOR
55 60 76 (FLUID) (GAS / AIR)

50

C PRESSURE SWITCH PRESSURE SWITCH TEMPERATURE ELECTRICAL WIRE

(ADJUSTABLE) SWITCH

28
ELECTRICAL SYMBOLS (ELECTRICAL)

69
C T
D PRESSURE TEMPERATURE LEVEL FLOW
VIEW A-A SECTION B-B SWITCH SWITCH SWITCH SWITCH

75 WIRE NUMBER IDENTIFICATION CODES

72 68
ELECTRICAL SCHEMATIC EXAMPLE HYDRAULIC SCHEMATIC EXAMPLE
49 CURRENT STANDARD CURRENT STANDARD

44 53 HARNESS IDENTIFICATION CODE THIS EXAMPLE

INDICATES WIRE 135 IN HARNESS “AG”
WIRE

CIRCUIT NUMBER
325-AG135 PK-14 IDENTIFICATION WIRE COLOR

CIRCUIT NUMBER WIRE WIRE GAUGE

G10 IDENTIFICATION COLOR 325-PK

PREVIOUS STANDARD

WIRE WIRE COLOR

325-PK-14 B A
11
73 CIRCUIT NUMBER
IDENTIFICATION
WIRE GAUGE (EXAMPLE VALVE)

VIEW C-C SECTION D-D

71
RIDE CONTROL ATTACHMENT STEERING
 14 13 12 11 10 9 8 7 6 5 4 3 2 1

J J
(Dimensions: 48 inches x 35 inches)

(35) SWITCH AS
LIMIT (STOP LIGHT)
3E-5520

TO TRANSMISSION CONTROL
RENR8679-03

TO BRAKE LIGHTS (7) CONTROL GP

FOOT BRAKE
FRONT AXLE 193-1448
RELEASE
NO
(3) ACTUATOR AS
(42) VALVE GP APPLY BRAKE
(32) SENSOR GP NC BRAKE CONTROL (SERVICE) 135-5148
POSITION C 201-3200
214-4863

(1) ACCUMULATOR GP
C
BRAKE
111-9040

I B
I

FROM DEMAND FAN TO HYDRAULIC OIL FILTER

O
REAR AXLE

A1
36 Page,

A2

H (36) SWITCH AS H
T
PRESSURE (BRAKE) NC
NO
A 3E-7693 TO TRANSMISSION CONTROL

(40) VALVE GP (NOT SHOWN ON GRAPHIC)

ACCUMULATOR CHARGING (BRAKE) C
172-6144 NC
NO

TO SEMS
(51) VALVE GP
C CONTROL (PARKING BRAKE)
106-1774

(37) SWITCH AS
PRESSURE (PARKING BRAKE OIL)
3E-6452
(NOT SHOWN ON GRAPHIC)

BRAKE CONTROL SYSTEM

G (16) CYLINDER GP (17) CYLINDER GP G
TILT (STANDARD) (LEFT) TILT (STANDARD) (RIGHT)
112-5004 112-5003 (2) ACCUMULATOR GP
RIDE CONTROL
(14) CYLINDER GP (15) CYLINDER GP 325-7154
TILT (LOGGER) (LEFT) TILT (LOGGER) (RIGHT)
125-0617 125-0616 (73) VALVE GP
(45) VALVE GP SOLENOID (RIDE CONTROL)
CHECK (AXLE OIL COOLER BYPASS) 1 (12) CYLINDER GP (13) CYLINDER GP
TILT (HIGH-LIFT) (LEFT) TILT (HIGH-LIFT) (RIGHT) 152-8340
130-5202
124-6227 124-6228

(67) VALVE GP G3 G2 (10) CYLINDER GP

RELIEF (STANDARD TILT CYLINDER) (ROD) LIFT (72) VALVE GP
4T-4933 111-8181 SHUTTLE
(23) PUMP GP 141-1481
AXLE OIL COOLER E9 (53) VALVE GP
(46) VALVE GP (64) VALVE GP
215-3013 CHECK DIVERTER (RIDE CONTROL)
RELIEF (LOGGER TILT CYLINDER) (ROD)
(AXLE OIL COOLER BYPASS) 2 P 115-9328
4T-6103
130-5202 C
(66) VALVE GP T
RELIEF (STANDARD TILT CYLINDER) (HEAD)
4T-4932
(63) VALVE GP G5 G4
RELIEF (LOGGER TILT CYLINDER) (HEAD)
F 4T-4935 F
(18) FILTER LEVER REARWARD
MAGNETIC RH LINE ON BOOM
(AXLE OIL COOLER) (FRONT AXLE) LEVER FORWARD E8
(49) VALVE GP (44) VALVE GP
(8) COOLER AS 251-6351 LH LINE ON BOOM
CHECK (RIDE CONTROL) CHECK
AXLE OIL
207-1810 9T-3096
200-4169 (62) VALVE GP AR AL TR TD LR LL

FRONT AXLE
REAR AXLE

RELIEF (HIGH-LIFT TILT CYLINDER) (ROD)

4T-4162

(56) VALVE GP
MAIN CONTROL (2-FUNCTION)
(19) FILTER 290-6005
MAGNETIC (AXLE OIL COOLER) (REAR AXLE) (57) VALVE GP (47) VALVE GP
251-6351 MAIN CONTROL (3-FUNCTION) CHECK (DEAD ENGINE,
290-6007 LIFT ARM LOWER)
164-7474
G1 (61) VALVE GP
RELIEF (HIGH-LIFT TILT CYLINDER) (HEAD)
4T-4934
AXLE OIL COOLER PUMP DISCHARGE
P T
AXLE OIL COOLER RETURN
(65) VALVE GP
RELIEF (MAIN)
E IMPLEMENT RETURN
114-2789 E
T IMPLEMENT PUMP DISCHARGE
T
T PILOT PUMP DISCHARGE
(70) VALVE GP
REVERSING FAN
191-8735 IMPLEMENT PILOT RETURN

PRIMARY PILOT SUPPLY - COMMAND CONTROL STEERING ATTACHMENT (6) CONNECTOR

C2 ORIFICE 1
128-7063

C1 T (5) CONNECTOR
C2 ORIFICE 2
(33) STRAINER 1 128-7063
200-5978
(31) SCREEN GP (74) VALVE GP (4) CONNECTOR
(9) CORE AS CASE DRAIN (STEERING PILOT) G7
STEERING 8C-0564
HYDRAULIC 154-2883 166-8495
OIL COOLER (11) CYLINDER GP
240-7313 STEERING C2 C3 C4 C5 V C6 C7
P 261-4949
P C1 B A

D C2 (75) VALVE GP (34) STRAINER 2

LOWER D
(22) MOTOR GP STEERING NEUTRALIZER 1 CLOSE
200-5978
REVERSING FAN (50) VALVE GP 321-5283 E3 E5 E7
255-6805 CHECK (STEERING QUAD) LS
C1 111-7775 P1 FLOAT

(41) VALVE GP (60) VALVE GP (55) VALVE GP (58) VALVE GP

(21) MOTOR GP
AUTO-REVERSING FAN PILOT (STEERING) LOWERING CONTROL DUMP LOWER PILOT (2-FUNCTION)
AUTO-REVERSING FAN
213-1040 173-0439 112-1817 290-8980
240-7732
RACK E2 RAISE E4 E6 (59) VALVE GP
(48) VALVE GP PA PILOT (3-FUNCTION)
CHECK P2 290-8981
G11
(HYDRAULIC OIL PB
COOLER BYPASS
240-0355 C T
(68) VALVE GP RAISE
T
P RELIEF (STEERING T OPEN
P CYLINDER
P CROSSOVER)
P 9T-7419
E1 R1
(52) VALVE GP
DEMAND FAN
191-8735
C (76) VALVE GP C
STEERING NEUTRALIZER 2
X 321-5283 P
(28) PUMP GP

(20) FILTER GP
(25) PUMP GP
IMPLEMENT
STEERING
G8 105-3635
(26) PUMP GP
P T

G10
LOADER FRAME
OIL (HYDRAULIC) 292-9964
PILOT (BRAKE)
330-6570 235-6501
(69) VALVE GP
RELIEF (STEERING PUMP BACKUP) HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
(71) VALVE GP 9T-7418
B PILOT/BRAKE PUMP OUTPUT
SHUTTLE
(54) VALVE GP 8J-6875
STEERING PUMP OUTPUT
DIVERTER (SECONDARY STEERING) AUTO-REVERSING FAN CONTROL CIRCUIT
144-5330 AXLE COOLER PUMP OUTPUT
SECONDARY STEERING PUMP OUTPUT
STEERING CIRCUIT
SUPPLY LINE
L LI S AUXILIARY CYLINDER CONTROL CIRCUIT
IMPLEMENT CONTROL CIRCUIT
G9 TILT CYLINDER CONTROL CIRCUIT
(27) PUMP GP
STEERING CYLINDER CONTROL CIRCUIT
(24) PUMP GP SECONDARY STEERING
LIFT CYLINDER CONTROL CIRCUIT
HYDRAULIC FAN 150-7585
DRAIN / RETURN LINE
235-2716 IMPLEMENT PUMP OUTPUT
(43) VALVE GP
B BREAKER RELIEF FAN PUMP OUTPUT B
(HYDRAULIC TANK) BRAKE CONTROL CIRCUIT
SOS AXLE OIL RETURN
220-0814
FROM ELECTRICAL CIRCUITS
BRAKES

(39) VALVE AS
FLUID SAMPLING LINE PATTERNS
164-5590
Pressure Line
(38) TANK GP
HYDRAULIC Pilot / Load Sensing Pressure
234-8928
(30) SCREEN AS Drain / Return Lines
HYDRAULIC TANK 2
9T-9227 Component Group

(29) SCREEN AS Solenoid Reference CALLOUTS

HYDRAULIC TANK 1
9T-9227 Solenoid Solenoid YY Taps (Pressure, Sampling, Sensor)
ENGINE END FRAME ID
E1
Location
C-13
Solenoid Name

Demand Speed Fan Solenoid

Callout Number
(Machine Location from (52) VALVE GP - CONTROL
Component
Name
Component Locations Table
E2 D-4 Rack Solenoid
138-1234 Part Number

A E3 D-4 Dump Solenoid A

E4 D-3 Raise Solenoid

E5 D-3 Lower Solenoid

THIS SCHEMATIC IS FOR THE 980H WHEEL LOADER HYDRAULIC SYSTEM
E6 D-3 3rd Function Port A Solenoid MEDIA NUMBER: RENR8679-03
E7 D-3 3rd Function Port B Solenoid HYDRAULIC SCHEMATIC PART NUMBER: 242-4309, CHANGE: 05, VERSION: -
E8 F-1 Ride Control Solenoid BRAKE CONTROL SYSTEM SCHEMATIC PART NUMBER: 142-0726, CHANGE: 02, VERSION: -
Components are shown installed on a fully operable machine with the key and engine off, transmission shifter
E9 F-2 Ride Control Solenoid in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

14 13 12 11 10 9 8 7 6 5 4 3 2 1